Pulling apparatus



01.12,1948. ,EPRQCE y 2,451,117

PULLING' APPARATUS Filed July 30, 1945:

Patented Oct. 12, 1948 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to a grease block puller and it is one object ofthe invention to provide a device by use of which a grease block in alocomotive bearing may be very easily extracted from the bearing afterit becomes worn to such an extent that it is necessary to replace itwith a new block of grease.

Another object of the invention is to provide a device adapted to beapplied to the outer end or front of a bearing and a grappleconstituting an element of the device engaged with a sheet of screeningembedded in the grease block so that by shifting the grapplelongitudinally the block of grease will be withdrawn from the bearing.

Another object of the invention is to provide a grease block pullerwherein the grapple is slidably mounted through a fork of a leverpivoted to a frame adapted to be detachably connected with the outer endof the bearing, the grapple having rack teeth for engagement by a crosspin of the lever so that by rocking the lever the grapple may be shiftedoutwardly in step by step movements for withdrawing the grease block.

Another object of the invention is to provide a grease block pullerwhich is simple in construction, easy to apply and operate, and notliable to become broken.

The invention is illustrated in the acompanying drawings wherein:

Fig. 1 is a perspective view of grease block puller.

Fig. 2 is a View looking at the bearing from which a grease block is tobe removed.

Fig. 3 is a view showing the bearing in section and the improved pullerin position for use.

Fig. 4 is a sectional view taken through the inner or front end portionof the frame of the puller along line 4 4 of Figure 5.

Fig. 5 is a top plan View of the front end portion of the frame.

Fig. 6 is 'a fragmentary sectional view upon an enlarged scale takenthrough the rear porti-on of the frame and the pivoted lever.

The improved device is employed for removing a grease block -I from thebearing 2 of a locomotive engine but may be put to other uses for whichit is found suitable. The grease block has embedded in it a screen 3which may be wire mesh, a plate of perforated metal or other suitablematerial and at its 4bottom is a metal plate 4 which constitutes asupport for the grease block and rests upon springs 5. The springs restupon the bottom of the chamber 6 of the bearing and urge the plate 4 andthe grease block upwardly the improved 5 must be withdrawn through theopen front of the chamber and a new one substituted. This is done bymeans of the improved puller constituting the subject matter of thisinvention, the door `8 being removed after withdrawing the pin 9 fromthe ears I0 of the door and the ears II of the bearing.

This puller has a frame I2 formed of strong metal, and referring toFigure 1 it will be seen that the metal strip from which the frame isformed is lbent to provide a U-shaped frame having a bridge I3 and sidearms III which are spaced transversely from each other and adjacent theybridge are formed with curved portions I5 which cause the bridge to beoiset from the plane of the arms as shown clearly in Figures 3 and 6.Bars I6 are mounted between front ends of the side larms M and thesebars carry blocks IY'I which are slidable along the bars and carry rodsor pins I8 which pass through openings in the side arms and projectoutwardly therefrom so that they may be moved through openings of theears I I and pivotally connect the frame with these ears. A rod I9 ismounted between the bent end portions of the side arms adjacent thebridge I3 and this rod passes through openings in the forks I9 of alever 20 to pivotally mount the lever. A pin 2I is mounted between theforks I 9 in such position that a bar 22 having teeth 23 along its loweredge may be passed through the forked end of the lever between the rodI9 and the rod 2|. At its front end the bar 22 carries hooks 24 whichare pivoted to the bar by a pin 25 and have bills 26 for engagingthrough openings of the screen 3 and connect the hooks with the screen.After the hooks have 4been engaged with the screen the lever may berocked back and forth along the bar and as it swings forwardly the pin2| will ride over the curved edges of the teeth and engage in thepockets in front of the teeth so that as the lever is swung rearwardlypull will be exerted upon the bar and the bar shifted rearwardly. Thisis repeated until the grease block has been extracted from the chamberof the bearing and a new block may then be fitted into the bearing andrest upon the plate 4. The rods or pins I8 will then be retracted andthe frame removed from its p0- sition between the ears II so that thedoor 8 may be replaced and closed.

retracted positionto an extended position for passing through ears of a-bearingg house and -con-- necting the frame with the bearing houseacross an open front thereof, a mounting rod extending Y between theside arms adjacent the bridge, a lever having a forked end pivoted tothe mounting rod, a pin carried by the forked end of said lever andspaced from the mounting rod,'a Idraw bar passing through the forked endf0f 'said lever and having a toothed lower edge resting upon said pin,and hooks pivotally mounted a-t the front end of said draw bar andextending forwardly therefrom with their front ends bent to form "billsfor engaging through a screen of a grease block.

.2. :A grease Vblock puller comprising a frame having 1side anms spacedvtransversely 'nf the frame, :bars kmounted between :said arms, blocksslidable along saidY bars, rods 4carried by :said

blocks and extending transversely of the Vframe in opposite directionsand through the arms for movement from -a retracted position to `anextended vvposition for `engaging through ears of :a bearing casing andmounting the frameout- Wardly of all Open .front of the casing, a lever4L pivotally carried by said frame, a pin carried by said lever andextending transversely thereof, a

draw bar slidable across the pin of the lever 'and Y having teethrforengagement thereby, and means at the front end of the draw bar forengaging through a screen of a grease block.

3. A grease block puller comprising a frame having side bars, blocksbetween the side bars slidable transversely of the frame,rods carried bysaid blocks and .extending transversely of the frame in oppositedirections and through the side Vv,bars for movement with the blocksfrom a retracted position to an extended position for engaging't-hroughears of a bearing casing and res movably mounting the frame outwardly ofan open fro-nt of the casing, a draw bar in said frame slidaibl-elongitudinally and having means at its front end for engaging a screenof a grease block and means for shifting'lth'e draw bar 'longitudinallyand imparting pulling force thereto for withdrawing the 4screen from'the bea-ring casing.

' LEO F; PRICE.

Y REFERENCES V CITED The following references are ofrecordin the le 'ofthis patent: v Y Umrnn .s'rATiizs ui'iniq'rs1 Number Nam-e Date1,537,812 Erickson May 12, 1.925 Y1,-611L969 Robertson Dec. 14,1926

